Misc: In 1880 W.C. Fields [---------- Dukenfield], actor (Bank Dick), born.?

Questions

intelligent people have more ---------- and copper in their hair?

intelligent people have more zinc and ---------- in their hair?

---------- drug prescriptions will be filled incorrectly in the next 12 months?

according to the ancient chinese, swinging your arms cures ---------- pain?

---------- was first used as a medical treatment in 2700 b.c. by chinese emperor shen-nung?